APA (7th ed.) Citation

Sapir, E. (1921). Language: An introduction to the study of speech. Harcourt, Brace.

Chicago Style (17th ed.) Citation

Sapir, Edward. Language: An Introduction to the Study of Speech. New York: Harcourt, Brace, 1921.

MLA (9th ed.) Citation

Sapir, Edward. Language: An Introduction to the Study of Speech. Harcourt, Brace, 1921.